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Flow Control

BERMAD Irrigation900 Series

Flow Control

HydrometerMagnetic Drive

with Hydraulic Control

IR-970-M0-50-RVZ

The BERMAD Model IR-970-M0-50-RVZ integrates a

vertical turbine Woltman-type water meter with a diaphragmactuated hydraulic control valve. As the system's Flow

Meter and Main Valve, it controls irrigation together with the

irrigation controller. The BERMAD Hydrometer limits the flow

to a constant preset maximum. It either opens or shuts in

response to pressure commands.

Features and Benefits

Integrated "All-in-One" Control Valve

Saves space, cost and maintenance

Line Pressure Driven, Hydraulically Controlled On/Off

Limits fill-up rate and consumer over-demand

Magnetic Drive with Vacuum-Sealed Register

Water-free gear train mechanism

Reed-switch and Opto pulse-generating modes

Various pulse combinations

Internal Inlet & Outlet Flow Straighteners

Saves on straightening distances

Maintains accuracy

Integrated Flow Metering Calibration Device

Paddle-Type Hydro-Mechanic Flow Pilot

No added head loss Wide setting range

User-Friendly Design

Easy Flow Setting

Simple in-line inspection and service

[1] BERMAD Model IR-970-M0-55-RVZ opens in response

to an electric signal limiting fill-up rate and consumer over

demand.

[2] BERMAD Backwash Valve Model IR-3x2-350-A-I

[3] BERMAD Backwash Flow Control Valve Model IR-470-beKU

Typical Applications

Computerized Irrigation Systems

Flow Monitoring and Leakage Control

Multiple Independent Consumer Systems

Line Fill-Up Control Irrigation Machines

Filter Stations

[1]

[2][2][2]

[3]

7/28/2019 BERMAD IR-970-M0-50-RVZ

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Flow ControlFor full technical details, refer to Engineering Section.

Technical Specifications

BERMAD Irrigation900 Series

i n f o @ b e r m a d . c o m w w w . b e r m a d . c o mThe info rmati on herein is subjec t to change wi thout not ice. BERMAD shal l no t be held liab le f orany errors. All rights reserved. Copyright by BERMAD.

Dimensions and WeightsSize DN

Inch803

1004

1506

2008

25010

L mm 300 350 500 600 600inch 11.8 13.8 19.7 23.6 23.6

Hmm 382 447 602 617 617inch 15 17.6 23.7 24.3 24.3

Cmm 290 340 450 465 465inch 11.4 13.4 17.7 18.3 18.3

Rmm 123 137 216 228 228inch 4.8 5.4 8.5 9 9

A; Bmm 305 325 390 390 415inch 12 12.8 15.4 15.4 16.3

WeightKg 23 31 71 93 141Ib. 57.7 68.3 156.5 205 310.9

,

IR-970-M0-50-RVZ

The Flow Pilot [1] commands the Hydrometer to throttle

closed should demand rise above pilot setting, and to

modulate open when demand drops. The Shuttle Valve [2]

directs the pilot command into the Hydrometer Control

Chamber [3]. Upon pressure rise command, the shuttle valve

automatically switches, allowing pressurization of the control

chamber, which causes the Hydrometer to shut.

The Manual Selector [4] enables local manual closing.

PC9AEM0-70-50R 05

Operation

12.510.0

7.5

5.0

2.5

1.5

0.15

1.0

0.75

0.5

0.25

P

psi

3

DN80

4

DN100

6

DN150

1.0

0.80.60.5

0.4

0.3

0.2

0.15

0.01

0.1

0.08

0.060.05

0.04

0.03

0.02

0.015

6 8 10 15 20 30 4 0 60 8 0 100 150 200 300 400 600Flowm3/h

Flowgpm 50 75 25

050

075

0

1000

150025

2000

250010

0150

200

300

350400

P

bar

8 & 10

DN200 & 250

Flow Chart

Technical DataPatterns and Sizes:Globe: 3-10; DN80-250

Angle 90: 3-8; DN80-200Angle 120: 4; DN100End Connections:Flanged: 3-10; DN80-250Pressure Ratings: 16 bar; 232 psiMinimum Operating Pressure:0.5 bar; 7 psiFor lower pressure requirements,consult factoryFlow Setting Range:1.0-5.0 m/sec; 3.3-16.5f/secSetting ranges vary according to specific pilot

spring. Please consult factory.

Materials:Body and Cover:Polyester Coated Cast or Ductile IronInternals:St. St. & Glass Fiber Reinforced NylonImpeller: PolypropyleneElastomers: Reinforced NR & NBRPivots and Bearings: Tungsten CarbideControl Accessories: Brass

Tubing and Fittings:

Reinforced Plastic and Brass

[2]

[1]

[4]

[3]

Globe G

Angle A

120 (4; DN100 only) H

ISO-16 16

ISO-10 10

ISO-14 (ISO-10/4 Holes) 14

ANSI-125 A1

JIS-10 J1

BST-D BD

Metal Control Accessories R

Paddle Flow Control Pilot V

Manual Selector Z

R.S. 100 Lit R02 R.S. 10 Gal RG4

R.S. 1 m3 R03 R.S. 100 Gal RG5

R.S. 10 m3 R04 R.S. 1000 Gal RG6

R.S. 100 Lit +1 m3 R23 R.S. 10+100 Gal G45

R.S. 1 m3+10 m3 R34 R.S. 100+1000 Gal G56

O.E. 1 Lit P01 O.E. 0.1 Gal PG2

O.E. 10 Lit P10 O.E . 1 Gal PG3

O.E.+R.S. 1+100 Lit PQ1 O.E.+R.S. 0.1+10 Gal P4G

O.E.+R.S. 10 Lit+1 m3 P13 O.E.+R.S. 1+100 Gal P5G

R.S. No Pulse RNP R.S. No Pulse Gal RNG

How to OrderPlease specify the requested valve in the following sequence: (for more options, refer to Ordering Guide.)

Sector Size PrimaryFeature

ControlCategories

AdditionalFeature

Pattern ConstructionMaterials

EndConnections

Coating Voltage &Position

Tubing &Fittings

DialCapacity

PulseRate

AdditonalAttributes

IRIR 970970 5050 GG 1616I PGPG -- PBPB WATWAT RVZRVZ0M0 R23R23-10"3-10"

Other attributes available on request

Plastic Tubing & Brass Fittings PB

Copper Tubing & Brass Fittings CB

R.S. = Reed-Switch O.E. = Opto-Electric

Other sizesavailable onrequest.

R.S. = Reed-Switch

O.E. = Opto-ElectricTwo parllel pulses are transmitted. other pulse rates are avaiable on request.

Pulse OptionOne pulse per

SizeLiter ; Gallon m3 ; Gallon

1; 0.1 10; 1 100; 10 1; 100 10; 1000

3-4"; DN80-100

6-10"; DN150-250

Accuracy &Flow Data (ISO 4064-1, Class B)

Size Accuracy DNinch

803

1004

1506

200 & 2508 & 10

Q min(Minimum flow)

5%m3 1.2 1.8 4 6.3

gpm 5.3 7.9 17.6 27.7Qn, ISO 4064-1(Nominal flow)

2%m3 40 60 150 250

gpm 176 264 660 1100

Qper=Q3(Permanent flow)

2%m3 100 160 250 400

gpm 440 704 1100 1760

2-Way Circuit "Added Head Loss",

(for "V" below 2 m/s; 6.5 f/s): 0.3 bar; 4.5 psi